Thinking
Senior Member
Joined: May 2021
Posts: 2,496
Likes: 1,199
From: The People's Republic of Colorado
There are actually two versions of the Mark VIII fan. There's a variable speed, and a two speed. The Volvo relay is not a "soft start" per se, but it will start on low, and low isn't nearly as big of a spike as starting on high. So, to answer the question - it is robust enough. I plan on using a Volvo relay with whatever I put on the truck - which will be a Cougar or Crown Vic fan. Those Crown Vic fans are pretty rocking too, BTW. FWIW - the 4.6 Cougar/T-Bird actually used the same fan as the 2 speed Mark VIII.
The VW/Audi switches are harder to find, and generally cost more, and there are (as you said) an abundance of confusing variations. The parts are available for the BMW harness still. In fact, you can buy the harness as a kit now - whereas before, I had to piece it together. AND, you can get the whole kit with a sensor on ebay as of late:
https://www.ebay.com/itm/144385226315
Just need to check on those temps.
The VW/Audi switches are harder to find, and generally cost more, and there are (as you said) an abundance of confusing variations. The parts are available for the BMW harness still. In fact, you can buy the harness as a kit now - whereas before, I had to piece it together. AND, you can get the whole kit with a sensor on ebay as of late:
https://www.ebay.com/itm/144385226315
Just need to check on those temps.
Senior Member
Joined: May 2021
Posts: 2,496
Likes: 1,199
From: The People's Republic of Colorado
Today's the day: Camerapalooza begins!
(That's the installation of my new radio and cameras)
I am also putting in new speakers. I did the rears (and replaced my last OEM lock actuator) last night and I already can't believe the boost in sound quality!
Also going to do an oil change and replace my brake fluid that turned dark green in just a year.
All in all, it's gonna be a fun weekend.
(That's the installation of my new radio and cameras)
I am also putting in new speakers. I did the rears (and replaced my last OEM lock actuator) last night and I already can't believe the boost in sound quality!
Also going to do an oil change and replace my brake fluid that turned dark green in just a year.
All in all, it's gonna be a fun weekend.
Smarter than most Racoons
Joined: Aug 2018
Posts: 2,426
Likes: 1,638
It reduces noise and fan wear but requires the proper signal from the PCM that isn't present on 10th gen trucks, or 11th for that matter.
So, we would either need to create a fancy controller that speaks to the PCM or ,just hear me out, use a cheaper single speed fan(s) with a constant potential controller (relays).
Last edited by ultimatenoobie; Sep 9, 2022 at 07:04 PM.